How to Declare an Integer Array in Rust - Step by Step Examples



How to Declare an Integer Array in Rust ?

Answer

To declare an integer array in Rust, you can use array notation or the Vec container.



✐ Examples

1 Declare and Initialize an Integer Array

In this example,

  1. We declare an integer array named numbers with predefined values using array notation.
  2. We print the array to demonstrate the initialization.

Rust Program

fn main() {
    let numbers = [1, 2, 3, 4, 5];
    println!("Integer Array: {:?}", numbers);
}

Output

Integer Array: [1, 2, 3, 4, 5]

2 Declare an Empty Integer Array

In this example,

  1. We declare an empty integer array named empty_array using the Vec container.
  2. We print the array to demonstrate the declaration.

Rust Program

fn main() {
    let empty_array: Vec<i32> = Vec::new();
    println!("Empty Integer Array: {:?}", empty_array);
}

Output

Empty Integer Array: []

Summary

In this tutorial, we learned How to Declare an Integer Array in Rust language with well detailed examples.




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